<!DOCTYPE HTML>
<html>
<head>
    <meta charset="UTF-8">
    <title>angularjs select 三级联动</title>
    
    <script type="text/javascript" src="http://cdn.angularjs.cn/angularjs/1.3.0-beta.17/angular.js"></script>
    <script src="http://cdn.static.runoob.com/libs/angular.js/1.4.6/angular.min.js"></script>
    <style type="text/css">
    label {
        padding: 5px 10px;
        border: 1px solid #fff;
    }
    .error {        
        border-color: #f00;
    }
    </style>
    
</head>
<body>

<div ng-controller='cityCtrl'>
    <label ng-class="{error: error.province}" >
        省份：
        <select ng-model="selected" ng-options="s.name for s in list" ng-change="c()" >
            <option value="">--请选择--</option>
        </select>
    </label>
    <label ng-show="selected.child.length" ng-class="{error: error.city}">
        市/区：
        <select ng-model="selected2" ng-options="sh.name for sh in selected.child" ng-change="c2()" >
             <option value="">--请选择--</option>
        </select>
    </label>
    <label ng-show="selected2.child.length" ng-class="{error: error.area}">
        县级/区域：
        <select ng-model="selected3" ng-options="x.value for x in selected2.child" ng-change="c3()" >
             <option value="">--请选择--</option>
        </select>
    </label>
    <input type="submit" value="subimt" ng-click="submit()" />
    <br />
    {{selected.name}} {{selected2.name}} {{selected3.value}}

</div>



<script type="text/javascript">

var app = angular.module('app', []);

app.controller('cityCtrl', ['$scope', '$http', function ($scope, $http) {
    $scope.error = {};
    $scope.list = [];
    $http.get('list.json').success(function (data) {
        $scope.list = data;
    });
    
    
    $scope.c = function () {
        $scope.error.province = false;
        $scope.error.city = false;
        $scope.error.area = false;
        $scope.selected2 = "";
        $scope.selected3 = "";
    };
    
    $scope.c2 = function () {       
        $scope.error.city = false;
        $scope.error.area = false;
        $scope.selected3 = "";
    };
    
    $scope.c3 = function () {
        $scope.error.area = false;
    };
    
    $scope.submit = function () {
        $scope.error.province = $scope.selected ? false : true;
        $scope.error.city = $scope.selected2 ? false : true;
        $scope.error.area = $scope.selected3 ? false : true;
    };
    
    
}]);



angular.bootstrap(document, ['app']);



</script>


    
</body>
</html>